cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A175761 Odd nonprimes such that the arithmetic mean of all prime factors is not an integer.

Table of values

n a(n)
1 1
2 45
3 63
4 75
5 99
6 117
7 135
8 147
9 153
10 165
11 171
12 175
13 207
14 245
15 255
16 261
17 273
18 279
19 315
20 325
21 333
22 345
23 351
24 363
25 369
26 375
27 385
28 387
29 399
30 405
31 423
32 435
33 455
34 459
35 475
36 477
37 495
38 507
39 531
40 539
41 549
42 561
43 567
44 595
45 603
46 615
47 639
48 651
49 657
50 665
51 675
52 705
53 711
54 715
55 735

List of values

[1, 45, 63, 75, 99, 117, 135, 147, 153, 165, 171, 175, 207, 245, 255, 261, 273, 279, 315, 325, 333, 345, 351, 363, 369, 375, 385, 387, 399, 405, 423, 435, 455, 459, 475, 477, 495, 507, 531, 539, 549, 561, 567, 595, 603, 615, 639, 651, 657, 665, 675, 705, 711, 715, 735]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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